4.-PLAN AND CONDUCT A PASSAGE - COMPASSES: MAGNETICAND GYRO AMD STEERING CONTROL SYSTEMS.
How often should the magnetic compass error be checked?
precession in relation to a free gyroscope is...
Magnetic variation changes its value with...
When soft iron is induced by the earth's magnetism...
If a ship has permanent magnetism with a blue pole to port, the deviation caused will be...
The deviation of a compass produced by a disturbing magnet varies...
Latitude error means that, in the northern hemisphere, the north end of a gyro compass (damped in tilt) settles...
Damping in tilt in a gyro compass produces...
Heeling error is at its maximum when the courses are...
Who is authorised to carry out repairs to a ship's magnetic compass?
The principle of a fibre-optic "gyro" compass relies on...
A gyro compass on a high-speed craft often takes time to settle correctly when altering course. What causes this problem?
Latitude, course and speed error of a gyro compass...
From those listed, which of the statements about magnetic variation is true?
How many degrees are there in each point of the compass?
In what direction (approximately) does the axis of the gyro compass wheel point?
Free gyroscopes are turned into gyro compasses by utilising...
Compass error is...
What is meant by "retentive magnetism" with regard to a ship's magnetic compass?
What is the main advantage of a liquid compass over a dry card compass?
From those listed, which of the statements about magnetic variation is NOT true?
Curves on charts showing values of equal variation are called...
If the axis of a free gyroscope on the equator is horizontal, the northerly end of the spin axis will...
When a force is applied at right angles to the spin axis of a free gyroscope, the axis moves...
If a ship is built in a yard while heading south, the poles of permanent magnetism will be...
A ship which has discharged cargo using electromagnets does not necessarily have to have the magnetic compass readjusted. Why not?
If a ship has permanent magnetism with a blue pole forward, the deviation caused will be...
If a ship is built in a yard while heading east, the poles of permanent magnetism will be...
How many points of the compass are there?
The effect of gravity control makes the axis of the gyroscope...
From those listed, which is NOT a way of destroying magnetism?
Who is legally responsible for the maintenance of the ship's magnetic compass?
A magnetic compass is subject, if certain objects are placed nearby, to interference which may affect the heading shown. From those listed, which is NOT likely to do so?
If a ship is built in a yard while heading north, the poles of permanent magnetism will be...
The gyro course is 332° and the gyro error is 2° High. What is the true course?
How is a ship's permanent magnetism acquired during building?
Variation values change for a particular place because...
The ship's magnetic compass should be adjusted following certain circumstances. From those listed, which is NOT one of those circumstances?
From those listed, which is NOT a reason for having the standard magnetic compass high up and on the centreline in the ship?
The proces of turning a gravity controlled gyroscope into a compass is called...
With reference to magnetism, soft iron...
The vertical force of the earth's magnetism....
Precession in relation to a free gyroscope is...
From those listed, which of the statements about the dip of a magnet is true?
Gaussin Error of the magnetic compass is caused by...
If a ship has permanent magnetism with a red pole forward, the deviation caused will be...
Gaussin or Retentive error...
If the axis of a free gyroscope in a north latitude is horizontal and pointed to the east of north of the meridian, it will...
Damping in azimuth in a gyro compass produces...
The magnetic equator is...
Magnetic compass deviation changes with....
A free gyroscope is said to have "three degres of freedom". From those listed, which is NOT one of these?
The magnetic force exerted at any point in the magnetic field varies...
All gyro compasses, when on the equator, should have...
From those listed, which are "soft iron" correctors?
The effect of Gaussin or Retentive error when a ship alters course is to produce a..
The ship's magnetic compass should be especially checked for error following certain circumstances. From those listed, which is NOT one of those circumstances?
With reference to magnetism, hard iron...
Where do you find a note of the annual rate of change in the magnetic variation at a place?
If a ship has permanent magnetism with a red pole to port, the deviation caused will be...
The gyro course is 165° and the gyro error is 3° Low. What is the true course?
Gyroscopic inertia means that the spin axis of a free gyroscope...
Leading lights are in line bearing 126°T. If the gyro error is 2° Low, what would the gyro bearing of the leading lights be?
Fibre-optic compasses have advantages over conventional gyro compasses. From those listed, which is NOT one of those advantages?
From those listed, which of the statements about the poles of a magnet is true?
The two unique properties of a free gyroscope are...
What is the main purpose of frequently recording deviation of the ship's magnetic compass in a log or compass deviation book?
The axis of a free gyroscope is pointed at a star. From those listed, which is NOT correct?
The point at which the helm must be applied to achieve a required course alteration is called the ...
The angle between the magnetic north and the true north is ...
How often should the auto pilot be tested in manual mode?
To convert a compass course to a magnetic course, it is necessary to apply...
To convert a magnetic course to a true course, it is necessary to apply...
If Var= 8W and Dev =4W, What is the compass error?
If the true transit bearing of two leading lights is read off the chart and the compass bearing of the two lights, when in transit, is taken, then the difference between the two bearings so obtained is the ...
Magnetic compass - Var = 7W; Dev = 12E; What is the compass error?
If ship's head by compass was 045 ( C), What is the true course if the variation is 5W and the deviation is 9.5 W?
Magnetic Compass - If var =6E; dev =3W, What is the compass error?
